842390151 has 4 divisors (see below), whose sum is σ = 1123186872. Its totient is φ = 561593432.

The previous prime is 842390149. The next prime is 842390177. The reversal of 842390151 is 151093248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 842390151 - 2¹ = 842390149 is a prime.

It is a super-3 number, since 3×842390151³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842390191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140398356 + ... + 140398361.

It is an arithmetic number, because the mean of its divisors is an integer number (280796718).

Almost surely, 2^842390151 is an apocalyptic number.

842390151 is a deficient number, since it is larger than the sum of its proper divisors (280796721).

842390151 is a wasteful number, since it uses less digits than its factorization.

842390151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280796720.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 842390151 is about 29023.9582241982. The cubic root of 842390151 is about 944.4328693078.

The spelling of 842390151 in words is "eight hundred forty-two million, three hundred ninety thousand, one hundred fifty-one".